This insert ball bearing carries radial loads through a spherical outer ring that seats in a matching housing, allowing self-alignment while the bearing itself acts as a non-locating type. The inner ring features a drive slot for shaft-side torque transmission, and both sides are fitted with R seals for contact sealing. Bore diameter is 50.0 mm, outside diameter 90.0 mm, width 49.2 mm, and net mass is 0.75 kg. Sealing designation: KRR. The spherical outer ring geometry lets the bearing compensate for angular misalignment between shaft and housing without inducing additional stress on the balls or raceways. The drive slot in the inner ring transmits rotation directly from the shaft, making this construction suited for locking-collar or set-screw mounting arrangements. The R seals on both sides retain internal lubrication and restrict ingress of contamination, supporting maintenance-reduced operation in radial load applications where the non-locating function allows axial displacement to be handled elsewhere in the arrangement.